http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47866
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |law at gcc dot gnu.org, | |mark at gcc dot gnu.org --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-03-08 18:41:04 UTC --- Seems that MEM_SET_IN_STRUCT_P use in there has been introduced by Mark in http://gcc.gnu.org/ml/gcc-patches/1999-01/msg00234.html Any idea why you think it should be unconditional in that case? BIT_FIELD_REF on a scalar doesn't make it a struct IMHO. Though, perhaps if (!MEM_SCALAR_P (to_rtx)) MEM_SET_IN_STRUCT_P (to_rtx, 1); is better written as if (!MEM_SCALAR_P (to_rtx)) MEM_IN_STRUCT_P (to_rtx) = 1; CCing Mark who wrote that patch and Jeff who reviewed it.